Turning-lathe.



PATENTED SEPT. 26, 1905. W.V HUGERSHOPP. TURNING LATI-IE. -APP'LIOATION FILED 0T.5,19o4.

UNITED sTATEs WILLIAM HUGEEsHoEE, or NEw YORK, N. Y.

l To a/ZZ whom, it may coince-Wt:

claims.

' stock and serves to guide the spindle of the gitudinally adjustable inthe usual manner Be it known that I, WILLIAM HUGERsHoFE'a citizen of the United States, residing'in'New York, Aborough of Bronx, in the State of Newv York, have invented certain-new. and useful Improvements in Turning-Lathes, of whichv` the following' is a specification.

This invention relates to improvements in lathes for turning forms.

' It relatesmore especially to lathes employed for, turning regularor irregular forms from india-rubber or other light refractoryl material.

The invention consists in certain combinations of parts and in certain details of construction, all of which will be fully described hereinafter and finally pointed out in` the In the accompanying drawings, Figure 1 represents a side elevation of a lathe embodying my invention. Fig. 2is atop view of the same. Fig. 3 is a vertical tranverse section on ,line 3 3, Fig. 2, looking in the direction Aof 'the arrow shown in said figure. Fig.4is a vertical longitudinal section through a portion of the lathe on line 44,. Fig. 2; and Fig.` 5 is a .detail plan view, partly in horizontal section, of a portion of the tool-head. v

Similar letters of 'refer-ence'indicate corre-l sponding parts. v j Y Referring tothe drawings, A indicates the bed of the lathe,.which can be of any lsuit able form. Upon the bed is mounted a headstock B and a tail-stock C, said tail-stock be-` ing preferably adjustable in the usual manner. A standard D is also mounted on the bed A between the head-stock andthe taillatter, as will be presently described.l .The tail-stock is provided with4 a spindlea, lonby means of a hand-wheel n. Thexwork E is centered between thel spindlea and the chuck a2, which may be of lany suitable form, and is secured to the spindle as. of the head-stock, At diametrically opposite sides of the work is arranged a frame F, guided in standards a* @501607, so as to be capable of reciprocation longitudinally in said standards parallel with the axial line of the work-between the spindle and the head ofthe tailstock. The standards a* a5 a6 al are adjustable longitudinally and transversely of the bed A of the lathe by means of suitable clamps as a9. At its end toward the tail-` stock the frame F is connected with a feed- Speccation of Letters Patent. l

lApplication led October 5, 1904. Serial No. 227,269.

.reamtetlsept. 2e, 1905.

. screw. Said screw ismoiinted loosely upon spindle ct, as indicated in Fig. 4, and isprovided, yas also indicated in Fig. 4:, with tight and. loose pulleys Z2' 2ff2, respectively, over which passes a Vpower-belt b3 and a cross power-belts@ from any suitable' source of Apower-fas, for instance, a power-shaft e3,

elongated so vas to connect the belts at any point between the standard D and the tail- 'stock C. The feed-screw bis threaded in the fstandardD and is connected at'ts forward end,` beyond said standard with the rear transverse portion or cross-head Z2* of the frame Eby means of a pin or stud b5 enteringa groove 56 in the feed-screw a The feed-screwisv @thereby connectedto the frame in such a Amanner as to permit rotation independently 'of the same,'but so as to move longitudinally therewith and by its rotation under the action of the belt b3 to feed or screw forward through lthe standard D, and thereby advance the Vframe F along the work'. e The frame F carries tool-holders, preferably two in number, each comprising a rod o Eguided inthe bushing c of the frame F and extending forwardly toward the axial line between the centers of the machine and then arched, las indicated at o2, over the normal position of the work to the rear rod c3 of the frame, uponwhich it is guided `by means of a y yoke or eye ci, and provided at its rear extremity with an antifriction-roller c5, adapted to bear 'upon a form or model o of thel workl to be produced, which is mounted in any suitable At a arched portion c2 with the rod c is formed a tool-head 08,. towhich the cutting-tools 0l', preferably two in number, are each'secured latopposite sides by. means of slot-screws, asl

. 90 ,mannerat the rear part of the machine-as, Y

k'for instance, between the centers c7 c. point approximately at the junction of the IOO material to be cut and the particular kind of tools used. e

In order to support the tools more firmly IIO and securea more reliable and eifectivecutv ting of the work, a tool-rest (Z3 is arranged upon the bed of the lathe, as indicated, said tool-rest being so arranged as to support the tools in their travel along the work. As before stated, two sets of tools are preferably employed. This construction is provided for the reason that india-rubber when vulcanized is a material of some diiiculty to work, and

in order to avoid chipping and to produce smooth cuts and smooth surfaces it is preferable to pass a number ot' tools over the surface, each making a small cut, than to pass a single tool once over the surface with a deeper cut. The frame Fis shown in thedrawings in approximately horizontal position. It may, however, by means of the standards a4 c c c7 be adjusted at either side, either higher or lower than shown, in such manner as to adjust the tools and place the same either above or below the center, as desired, for the better cutting of thework or for bringing the entire frame into an inclined or tilted position in case such position should be desirable. The adjustment is accomplished by mounting the supporting-rods e of the standards in hollow posts c', in which they are secured by means of set-screws, as shown. The work is rotated by means of a powerbelt applied to the cone of the head-stock in the usual manner.

For turning by means of my improved lathe-t`or example, a telephone-receiver, for which operation the lathe is specially desireda finished form is placed between the centers c7 09 and the stock to be cut placed in the chuck and supported at its outer end by the tailstock center a. The power-belt 3 is now moved upon the tight pulley and the crossbelt e2 moved upon the loose pulley f2. The feed-screw is thereby rotated and screws forward through the standard D, advances the frame F, and carries the tools thereby toward the head-stock along the work, each tool cutting the same successively deeper than the preceding until the tools arrive at the limit of motion, when the belt if is shifted back onto the loose pulley b2. Both belts are now on loose pulleys. During the advance movement of the frame'with the tools the antifriction-rollers have traversed the form c and have'thereby guided the tool-supports in a path corresponding to the form, so that the work has been cut in exact correspondence therewith. The work is now removed in the usual manner b v withdrawing the spindle tand releasing the work from the chuck and another untinished piece of stock is placed in position in the chuck and the tail-center ixed. The cross-belt c2 is now shifted to the tight pulley f', whereby the feed-screw is caused to rotate in a direction opposite to its motion irst described, thereby screwing in backward direction through the standard D and drawing back the frame F, and with the same the tools, along the new piece of stock. The tool-supports follow the form cG in the manner before described` and the tools cut successively into the work during the traverse oi the same, so that when the frame is entirely withdrawn into its original position the work is completed. The belt e2 is then shifted onto the loose pulley fz, whereby the frame is brought to rest and the iinishcd work may be removed and a .new piece inserted 1n the same manner as bcfore.

It will be understood that many modifications in the details of the construction may be made without departing Jfrom the spirit of the invention. For example, in place of a chuck a mandrel may be used for the support of the work, and such mandrel is customarily used, although for purposes of illustration a chuck has been shown in the drawings. Any other means of support may be provided.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a turning-lathe, the combination, with means for supporting and rotating the work, a form, and a longitudinally-rcciprocating frame guided at each side of the work, of a tool-support carried by said frame and comprising a rod guided at each end in said frame, said rod being provided with an intermediate arched portion and bearing at one end against said form, a tool-head at the junction of said arched portion with the main portion oi said rod, and a tool carried by said tool-head.

2. In a turning-lathe, in combination, a bed, means thereon for supporting and rotating the work, a form, a plurality otl upright standards arranged at either side ot` said bed, a longitudinally-reciprocating frame embodying longitudinally-extending rods guided in said standards, a tool-support guided transversely oi' said frame and bearing against said t'orm, and a tool carried by said support.

3. In a turning-lathe, in combination, a bed, means thereon for supporting and rotating thc work, a form, a plurality of upright standards arranged at either side of said bed and adjustable longitudinally and transversely thereof, a longitudinally -reciprocating frame embodying rods guided in said standards, a tool-support guided transversely ot' said frame and bearing against said form, and a tool carried by said support.

4. In a lathe, in combination, a bed, means for supporting and rotating the work, a form arranged in proximity to the latter, a longitudinally-reciprocating frame guided at cach side of the work, a tool-support carried by said frame and bearing against said form, a tool carried by said support, and a lixed toolrest arranged on said bed for supporting said tool throughout the longitudinal cutting movement thereof.

5. In a lathe, in combination, a head-stock, means for rotating the work, a tail-stock provided with a centering-spindle, a standard bctween said head-stock and said tail-stock for IOO IOS

IIO

v.guiding said spindle, atuhular feed-screw in-l closing said spindle and extending between said tail-stock and saidstandard, a frame guided longitudinally of the Work and attachedl to said feed-screw so as to move longitudi. nally therewith but rotate independently thereof, a tool-support carried by said frame,

and a tool carried by said support. Y 6. The combination, of means forsilpportbut rotate independently thereof, a standard receiving said feed-screw, said tail-stock spindle extending through said feed-screw to the Work, tight and loose pulleysl on said feedscrew, a tool-support carried by said frame and adapted to -hear against saidV form, and a tool carried by said support. t

ln testimony that I claim the foregoing as my invention I have signed my name in v)oresence of two subscribmg Wltnesses.

I WILLIAM HUGERSHOFF.

Witnesses: V-

. JOSEPH H. NILEs, v HENRYY'J. SUHRBIER. 

